Tag:stabilization treatment

№11|2014

DRINKING WATER SUPPLY

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UDC 628.161.2:546.72/.711

Selyukov A. V., Baykova S. A.

Underground water conditioning for utility and drinking water supply of oil refinery producing area

Summary

The results of experimental studies of conditioning underground water containing high iron concentrations for utility and drinking water supply of oil refinery producing area are presented. At the first stage the exact values of underground water pH and redox potential of the medium were defined in order to evaluate the potential of using different deironing-demanganation processes. A specially designed flow-through temperature-controlled cell was used for measurements. The comprehensive technology of chemical treatment developed earlier for conditioning underground water at the Tumen North here again ensures the standard quality of drinking water. In the process of removing iron and manganese from water with simultaneous stabilization the chemicals having RF certificates for drinking water supply are used: hydrogen peroxide (GOST 177-88), potassium permanganate (ANSI/AWWA 603-88 standard) and caustic soda (GB 5175-2008 standard). The use of stabilization treatment provides for the elimination of secondary pollution with iron in the distribution network. Separation of insoluble reaction products was carried out by filtration through granular bed (quartz sand of 0.5–1.2 mm fraction). The obtained correlations between redox potential and chemical dosages allow to automatize the dosing process. In this case the technology provides for the residual concentration of iron and manganese less than 0.1 mg/l in drinking water. As an additional effect the technology ensures reducing the concentration of pollutants of technogenic origin– anionic surfactants (75%) and oil products (90%). Thereby the residual concentration meets the standard for bottled water. On the basis of the carried out tests the Process regulations for designing facilities for underground water conditioning of 4800 m3/day capacity were developed.

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№7|2013

POTABLE WATER SUPPLY

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UDC 628.161.2:546.72/.711

Selyukov A. V., Baykova S. A., Solovyova O. V.

Conditioning underground water of the Amur water intake (the city of Komsomolsk-on-Amur)

Summary

The results of investigating conditioning underground water of the Amur water intake of Komsomolsk-on-Amur are given. At present the construction of in situ deironing-demanganation facilities is underway; however the test operation of the first stage showed that the water quality did not meet the normative standard. An alternative technology was suggested, i.e. chemical treatment that ensured water stabilization and elimination of iron and manganese. In-process tests take into account all possible scenarios of operating the integrated aquifer treatment facilities under construction.

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№2|2020

DRINKING WATER SUPPLY

DOI 10.35776/MNP.2020.02.01
UDC 628.16.081:542.943-92

Selyukov A. V., Rakhimov V. V.

Reconstruction of the ground water treatment plant
in Noyabrsk (Yamal-Nenets Autonomous Okrug)

Summary

The main results of technological surveys that form the basis for the project of reconstruction of the ground water treatment plant in Noyabrsk (Yamalo-Nenets Autonomous Okrug) are presented. The plant was built according to the project of DAR/VODGEO CJSC (Moscow) and commissioned in September 2006. The plant uses a new technology that provides for the sequential treatment of water with two oxidizing agents – hydrogen peroxide and potassium permanganate to remove iron and manganese compounds. The project shortcomings and incomplete implementation of design solutions complicate the regular operation of the plant and make it difficult to ensure the standard quality of drinking water. It was stated that ground water contained hydrogen sulfide in concentrations up to 0.1 mg/dm3, which required extra consumption of chemicals. Manual dosing of chemicals causes significant deviations from the required doses: from –14.5 to +19.1% for hydrogen peroxide and from –8.5 to +9.1% for potassium permanganate. It is pointed out that crude products of potassium permanganate produced by the P. R. China used as a chemical agent in drinking water supply, pose a threat of increased toxicity of drinking water. The determined value of the Langelier index (index of saturation with calcium carbonate) of ground water (–2.35 units) allowed to conclude that stabilization treatment by alkalization is required. The performed test water treatment with hydrogen peroxide and potassium permanganate in combination with alkalization showed that this process provided for achieving the residual concentrations of manganese < 0.1 mg/dm3 and total iron 0.1–0.15 mg/dm3 in the absence of residual hydrogen sulfide. However, to produce water of constant standard quality, high accuracy of chemical dosing is required that can only be provided by completely automated dosing. The project of upgrading the ground water treatment plant in Noyabrsk designed on the basis of technological research, allows to resolve the existing problems and ensure the standard quality of drinking water.

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№2|2013

POTABLE WATER SUPPLY

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UDC 628.16.094.7

Selyukov A. V.

Stabilization treatment of underground waters in the Tyumen North Region

Summary

The necessity of stabilization treatment of underground water used for potable water supply of the Tyumen North settlements is substantiated. The expediency of adding alkaline agents in the process of stabilization at the existing water treatment facilities in particular, is shown. Caustic soda is recommended as a stabilization agent. The in-process tests were carried out with water from Novomikhailovsk and Altymsk aquifiers that are most often used for potable water supply in the region.

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